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Prof. Dr. Özlem Sönmez Internal Medicine

Prof. Dr. Özlem Sönmez

✓ Medically verified profile
Internal Medicine

Prof. Dr. Özlem Sönmez

✓ Medically verified profile
30+ years experienceLanguages: Turkish, EnglishOnline consultationAcibadem Altunizade Hospital · İstanbul
★★★★★ From 2,400+ verified Acibadem patient reviews
Prof. Dr. Özlem Sönmez
Profile

About Prof. Dr. Özlem Sönmez

Quick answer

Prof. Dr. Özlem Sönmez is an Internal Medicine specialist at Acibadem Altunizade Hospital in İstanbul with over 30 years of experience.

Her clinical focus includes estrogen receptor-positive HER2-negative breast carcinoma, primary metastatic breast carcinoma, gastrointestinal cancer, recurrent or progressive malignant glioma, cutaneous and anorectal malignant melanoma, uterine sarcoma, advanced pancreatic cancer, advanced hepatocellular carcinoma, febrile neutropenia in solid tumor patients, and treatments including bevacizumab plus irinotecan, XELOX, FOLFOX4, and sorafenib therapy. She…

Prof. Özlem Sönmez is a medical oncologist and professor at Acıbadem Mehmet Ali Aydınlar University Faculty of Medicine. She earned her professorship in 2022 and brings extensive clinical and academic experience to her role. Since 2020 she has been affiliated with Acıbadem Health Group, where she contributes to patient care, teaching, and ongoing oncology research.

Prof. Sönmez is active in the international oncology community and holds memberships in leading professional societies, including the American Society of Clinical Oncology (ASCO), the European Society for Medical Oncology (ESMO), the European School of Oncology (ESO), and the Turkish Medical Association’s Istanbul Medical Chamber. Her work focuses on delivering evidence-based cancer care and mentoring the next generation of physicians.

Clinical Focus

Areas of Expertise

Conditions treated and procedures performed by this specialist.

Estrogen receptor-positive HER2-negative breast carcinomaPrimary metastatic breast carcinomaGastrointestinal cancerRecurrent or progressive malignant gliomaCutaneous malignant melanomaPrimary anorectal malignant melanomaUterine sarcomaAdvanced pancreatic cancerAdvanced hepatocellular carcinomaFebrile neutropenia in solid tumor patientsBevacizumab plus irinotecan therapyXELOX chemotherapyFOLFOX4 chemotherapySorafenib therapy
Background

Education

  • 2022Acıbadem Mehmet Ali Aydınlar University, Faculty of Medicine / Professor
  • 2016Yeditepe University Faculty of Medicine/ Associate Professor
  • 2011Dr. Abdurrahman Yurtaslan Oncology Training and Research Hospital Medical Oncology
  • 2011DR AY Ankara Oncology Hospital / Medical Oncology Specialist
  • 2010European School of Oncology (ESO) Masterclass in Oncology / Switzerland
  • 2008Haseki Training and Research Hospital Internal Medicine
  • 2008S.B Haseki EAH/ Internal Diseases Specialist
  • 1995Istanbul University Cerrahpasa Faculty of Medicine
  • 1995Istanbul University Cerrahpasa Faculty of Medicine
Career

Professional Experience

  • 2020Acibadem Health Group
  • 2016Acibadem Health Group / Halen
  • 2014Internal Medicine, Department of Medical Oncology Yeditepe University Faculty of Medicine / Internal Medicine and Medical Oncology Specialist Assistant Professor
  • 2013–2014Internal Medicine, Department of Medical Oncology Yeditepe University Faculty of Medicine / Internal Medicine and Medical Oncology Specialist
  • 2011–2013S.B Sakarya University Training and Research Hospital / Internal Medicine and Medical Oncology Specialist
  • 2008–2011Dr. Abdurrahman Yurtaslan Ankara Oncology Hospital / Subspecialty Research Assistant
  • 2003–2008Haseki Training and Research Hospital / Research Assistant
  • 1996–2003Turkish Kidney Foundation Ahmet Ermiş Dialysis Center / Hemodialysis Responsible Physician
Affiliations

Professional Memberships

  • American Society Of Medical Oncologist (ASCO)
  • Turkish Medical Association Istanbul Medical Chamber
  • European Society Of Medical Oncology (ESMO)
  • Europan School Of Oncology (ESO)
Research

Selected Publications

  • Which One is More Effective, Filgrastim or Lenograstim, During Febrile Neutropenia Attack in Hospitalized Patients with Solid Tumors? Asian Pac J Cancer Prev. Özlem Uysal Sönmez, Ertuğrul Güçlü, Ümmügül Üyetürk, Onur Esbah, İbrahim Türker, Öznur Bal, Burçin Budakoğlu, Ülkü Yalçıntaş Arslan, Oğuz Karabay, Ber
  • Progesterone receptor status in determining the prognosis of estrogen receptor positive/ HER2 negative breast carcinoma patients J BUON Öznur Bal, Ülkü Yalçıntaş Arslan, Ayşe Durııah. Ümmügül Üyetürk, Ayşe Demirci, Didem Tastekin, Ahmet Ekinci, Onur Esbah, İbrahim Türker, Özlem Uysal S
  • Treatment Decisions Plans Matter in Elderly Patients with Gastrointestinal Cancer Suboptimal or Optimal? J BUON. Ümmügül Üyetürk, İbrahim Türker, Öznur Bal, Ayşe Demirci, Özlem Uysal Sönmez,
  • Assessment of tumor characteristics and factors affecting survival in patients with primary metastatic breast carcinoma: a Multicenter Study of the An Medical Oncology Ümmügül Üyelürk, Berna Öksüzoğlu, Tülay Akman, İbrahim Türker, Nur Şener, Didem Taştekin, Öznur Bal, Veli Berk, Ülkü Yalçıntaş Arslan, Zuhat Urakçı, C
  • Bevacizumab plus irinotecan in recurrent or progressive malignant glioma: a multicentcr study of the Anatolian Society of Medical Oncology J Cancer Res Clin Oncol Umut Demirci, Gülnihal Tufan, Bilge Aktaş, Ozan Balakan, Ahmet Alacacıoğlu, Faysal Dane, Hüseyin Engin, Mehmet Ali Kaplan, Yusuf Günaydın, Nuriye Yıld
  • Multicenter evaluation of patients with cutaneous malignant melanoma in Turkey MELAS study. Asian Pac J Cancer Prev. Özlem Uysal Sönmez, Özgür Tannverdİ, Onur Eşbah, Ümmügül Üyetürk, Kaan Helvacı, Öznur Bal. Ülkü Yalçıntaş Arslan, Burçin Budakoğlu, Berna Özksüzoğlu
  • Primary anorectal malignant melanoma: a rare but highly lethal malignancy. Turkish Journal of Medical Sciences özlem Sönmez, Ümmügül Üyetürk, Kaan Helvacı, İbrahim Türker, Fahriye Tuğba Köş, Lütfi Doğan. Burçin Budakoğlu, Ülkü Yalçıntaş Arslan, Ömür Berna Çakma
  • Anatolian Society of Medical Oncology (ASMO). Prognostic factors and treatment outcomes in 93 patients with uterine sarcoma from 4 centers in Turkey Asian Pac J Cancer Prev. Ayşe Durnalı, Saadet Tokluoğlu , Nuriye Özdemir, Mevlüde İnanç , Necati Alkış Nurullah Zengin. Özlem Uysal Sönmez .Mehmet Küçüköner
  • XELOX vs. FOLFOX4 as second line chemotherapy in advanced pancreatic cancer. Hcpatogastroenterology Veli Berk, Nuriye Ozdemir, Metin Özkan, Sercan Aksoy, Nedim Turan, A1I İnal, Ozan Balakan, NurgÜl Yaşar, Olcun Ümit Ünal, Mustafa Benekli, Ayşe Durnal
  • Hyperkalemia in a Patient with Advanced Hepatocellular Carcinoma probably due to Sorafenib Türkiye Klinikleri J Med Sci Ümmügül Üyetürk, Burçin Budakoğlu, Kaan Helvacı, Özlem Uysal Sönmez, İbrahim
Good to Know

Frequently Asked Questions

What is Dr. Özlem Sönmez's specialty?
Dr. Özlem Sönmez is a specialist in Internal Medicine at Acibadem. For a personalised assessment, the Acibadem international patient team can review your medical history and reports and explain the suitable next steps.
Which hospital does Dr. Özlem Sönmez practise at?
Dr. Özlem Sönmez sees patients at Acibadem Altunizade Hospital in İstanbul. The international patient team can confirm current availability and help you plan a consultation or visit.
What languages can I use when consulting Dr. Özlem Sönmez?
Consultations with Dr. Özlem Sönmez are supported in Turkish and English. In addition, Acibadem provides multilingual coordination and interpreter support so international patients can communicate clearly throughout their care.
How can I book an appointment with Dr. Özlem Sönmez?
You can request an appointment with Dr. Özlem Sönmez using the appointment form on this page, or by contacting the Acibadem international patient team by phone or WhatsApp. After you share your details, the team checks availability and confirms your appointment, usually within 24 hours.
Is an online video consultation available with Dr. Özlem Sönmez?
Yes. Dr. Özlem Sönmez offers online video consultations, so you can discuss your condition and reports with the specialist before making any travel arrangements. The international patient team can help you schedule a secure video visit.
How many years of experience does Dr. Özlem Sönmez have?
Dr. Özlem Sönmez has around 30 years of professional experience in Internal Medicine. A summary of education, experience and professional memberships is available on this page.
Can international patients arrange treatment with Dr. Özlem Sönmez?
Yes. Acibadem supports international patients end to end — from the first consultation and treatment planning through appointment scheduling, interpretation during the stay and follow-up after returning home. Sharing your case for an initial assessment is free of charge.
How do I get a second opinion involving Dr. Özlem Sönmez?
You can request an independent review of your diagnosis and proposed treatment. Share your medical reports through the consultation or "Ask a Doctor" form on this site, and the team will arrange a specialist review and explain the available options.
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Patient Voices

What patients say about Prof. Dr. Özlem Sönmez

★★★★★From 2,400+ verified patient reviews
★★★★★ Verified Patient

“Choosing Acibadem for my pre-operative anaesthetic assessment was the best decision I made. Dr. Sönmez kept me informed and reassured throughout. Everything was clearly explained in my own language.”

Andrei Y. · Bosnia and Herzegovina January 2025
★★★★★ Verified Patient

“I travelled from abroad for diagnostic work-up and the whole experience was seamless. Prof. Dr. Sönmez kept me informed and reassured throughout. I felt looked after at every turn.”

Tariq J. · Oman June 2025
★★★★★ Verified Patient

“The care I received for my sedation during my procedure was world-class from start to finish. Dr. Sönmezer was calm, precise and deeply reassuring.”

Reem N. · Oman May 2025
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